fluoxetine
8 interactions related to fluoxetine
fluoxetine + sam-e
SAM-e has its own serotonergic and mood-elevating activity, so combining it with fluoxetine can add to your overall serotonin tone. In theory this can raise the risk of serotonin syndrome, and in vulnerable people it can tip mood into hypomania or mania. Because fluoxetine clears slowly, this caution lingers for weeks after the last dose. The evidence is mostly case reports involving other antidepressants and general guidance about combining SAM-e with serotonin-raising drugs, rather than fluoxetine-specific data.
fluoxetine + kava
Kava carries a well-documented risk of serious, unpredictable liver injury and acts as a central nervous system depressant, so combining it with fluoxetine raises concern about additive sedation and liver harm. Kava also inhibits the liver enzymes that clear fluoxetine, though this has only been shown in laboratory studies and any rise in fluoxetine levels in people remains theoretical.
fluoxetine + tryptophan
Fluoxetine blocks serotonin reuptake while tryptophan supplies the raw material for serotonin synthesis, and the combination can produce an excitatory reaction or serotonin syndrome. Fluoxetine's long-acting active metabolite means this risk persists for weeks after the last dose.
fluoxetine + saffron
Saffron (Crocus sativus) has its own mild antidepressant activity, including serotonergic effects shown in randomized controlled trials. Combining a standardized saffron extract with fluoxetine theoretically adds to serotonergic tone, but augmentation trials adding saffron on top of existing antidepressants found it well tolerated, with no reported cases of serotonin syndrome. The interaction is best treated as plausible rather than documented.
fluoxetine + st. john's wort
Fluoxetine and St. John's wort both increase serotonin activity, and combining them can add to the same effect and contribute to serotonin syndrome.
cannabis + ssris
Cannabinoids inhibit liver enzymes (including CYP2C19) that clear several SSRIs such as sertraline, citalopram, and escitalopram, which can raise SSRI plasma levels. Cannabinoids also touch the serotonin system, and case reports describe serotonin syndrome precipitated by high-potency cannabis in patients on serotonergic regimens.
fluoxetine + 5-htp
Fluoxetine is an SSRI that blocks serotonin reuptake, and 5-HTP is a direct precursor the body converts into serotonin. Combining them can push serotonin to levels associated with serotonin syndrome, and fluoxetine's long-lived active metabolite norfluoxetine extends this risk for weeks after the last dose.
alcohol + fluoxetine
Fluoxetine (Prozac) is an SSRI antidepressant, and alcohol is a central nervous system depressant. The FDA-approved Prozac label states that alcohol use is not recommended while taking fluoxetine. Fluoxetine and its active metabolite norfluoxetine also have unusually long half-lives, so the drug stays in your system for weeks once you reach steady state — there is no simple "timing window" that avoids the interaction. Notably, a controlled human study found that alcohol did not measurably increase fluoxetine's psychomotor impairment, so the combined sedative effect is more modest than once assumed; the precaution remains sensible but is not an emergency.